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1. 发明授权

US4513256A Swept frequency signal generator 失效
标题翻译：扫频信号发生器
公开(公告)号：US4513256A
公开(公告)日：1985-04-23
申请号：US508933
申请日：1983-06-29
申请人： Takenori Kurihara , Shigeki Tojo , Yohei Hirakoso
发明人： Takenori Kurihara , Shigeki Tojo , Yohei Hirakoso
IPC分类号： H03B1/00 , H03B23/00 , H03L7/12
CPC分类号： H03B23/00 , H03B2200/0092 , H03B2201/0241
摘要： A sweep voltage from a sweep voltage generator is provided to sweep start and stop adjusting means, the outputs of which are summed by a summing circuit and, by the summed output, the oscillation frequency of a voltage controller oscillator is controlled. The oscillation frequency of the voltage controlled oscillator and the output frequency of a reference signal generator set to a sweep start frequency are compared by comparing means. The output of the sweep voltage generator is put in a sweep start state and sweep start adjusting means is adjusted in accordance with the output of the comparing means, thereby to cause the oscillation frequency of the voltage controlled oscillator to agree with a set sweep start frequency. The output of the sweep voltage generator is put in a sweep stop state and sweep stop adjusting means is adjusted in accordance with the output of the comparing means, thereby to cause the oscillation frequency of the voltage controlled oscillator to agree with a set sweep stop frequency.
摘要翻译：来自扫描电压发生器的扫描电压被提供给扫描启动和停止调整装置，其输出由加法电路相加，并且通过相加的输出来控制电压控制器振荡器的振荡频率。通过比较装置比较压控振荡器的振荡频率和设定为扫描起始频率的参考信号发生器的输出频率。扫描电压发生器的输出被置于扫描开始状态，并且根据比较装置的输出来调整扫描开始调整装置，从而使压控振荡器的振荡频率与设定的扫描起始频率一致。扫描电压发生器的输出被置于扫描停止状态，并且根据比较装置的输出调节扫描停止调整装置，从而使压控振荡器的振荡频率与设定的扫频停止频率一致。

2. 发明授权

US4488123A Frequency synthesizer 失效
标题翻译：频率合成器
公开(公告)号：US4488123A
公开(公告)日：1984-12-11
申请号：US331291
申请日：1981-12-16
申请人： Takenori Kurihara
发明人： Takenori Kurihara
IPC分类号： H03L7/22 , G01R23/173 , H03L7/197 , H03L7/23 , H03L7/18
CPC分类号： H03L7/235
摘要： The output from a first variable frequency oscillator is frequency divided by a variable frequency divider and the frequency-divided output is phase compared by a first phase comparator with a first reference signal. By the phase-compared output is controlled a second variable-frequency oscillator of higher frequency stability than that of the first variable frequency oscillator. The output from the first variable oscillator is frequency divided by another frequency divider and the frequency-divided output is phase compared by a second phase comparator on the basis of the output from the second variable frequency oscillator and, by the phase-compared output, the first variable frequency oscillator is controlled. By changing the frequency dividing ratio of the variable frequency divider, the oscillation frequency of the first variable frequency oscillator is set.
摘要翻译：来自第一可变频率振荡器的输出由可变分频器分频，并且分频输出由具有第一参考信号的第一相位比较器进行相位比较。相位比较输出被控制为比第一可变频率振荡器频率稳定性更高的第二可变频率振荡器。来自第一可变振荡器的输出被另一个分频器分频，并且基于第二可变频率振荡器的输出，通过第二相位比较器对分频输出进行相位比较，并且通过相位比较输出，第一变频振荡器被控制。通过改变可变分频器的分频比，设定第一变频振荡器的振荡频率。

3. 发明授权

US4602220A Variable frequency synthesizer with reduced phase noise 失效
标题翻译：可变频率合成器具有降低的相位噪声
公开(公告)号：US4602220A
公开(公告)日：1986-07-22
申请号：US765502
申请日：1985-08-14
申请人： Takenori Kurihara
发明人： Takenori Kurihara
IPC分类号： H03B19/00 , H03B21/00 , H03B21/02 , H03L7/16 , H03L7/20
CPC分类号： H03B21/02 , H03L7/16 , H03L7/20
摘要： A reference signal from a reference signal source is supplied to a frequency transformer and a side band signal generator. The frequency transformer is formed mainly by up-converters and produces a frequency m times as high as the frequency f.sub.s of the reference signal. The side band signal generator outputs signals of base and harmonic frequencies f.sub.s, 2f.sub.s, 3f.sub.s, . . . and nf.sub.s (where n is less than m) and produces less phase noise than does the frequency transformer. The outputs of the frequency transformer and the side band signal generator are frequency mixed by a frequency mixer, and one frequency component in the frequency-mixed output is selected by a variable filter.
摘要翻译：来自参考信号源的参考信号被提供给频率变换器和边带信号发生器。变频器主要由上变频器形成，产生频率高于参考信号频率fs的频率m倍。边带信号发生器输出基极和谐波频率fs，2fs，3fs，...的信号。。。和nfs（其中n小于m）并且产生比变频器更少的相位噪声。频率变换器和边带信号发生器的输出通过混频器进行频率混合，频率混合输出中的一个频率分量由可变滤波器选择。

4. 发明授权

US4459560A Plural phase locked loop frequency synthesizer 失效
标题翻译：多相锁相环频率合成器
公开(公告)号：US4459560A
公开(公告)日：1984-07-10
申请号：US339613
申请日：1982-01-15
申请人： Takenori Kurihara
发明人： Takenori Kurihara
IPC分类号： H03L7/22 , H03L7/197 , H03L7/23
CPC分类号： H03L7/23 , Y10S331/02
摘要： First and second frequency signals are frequency converted by a frequency converter and the frequency-converted output and the output from a variable frequency oscillating means are phase compared by a digital phase comparator. The phase-compared output controls the variable frequency oscillating means, constituting a first phase lock loop of a wide capture range. The output from the variable frequency oscillating means is frequency converted by the first frequency signal and the converted output and the second frequency signal are phase compared by an analog phase comparator. By the phase-compared output is controlled the variable frequency oscillating means, constituting a second phase lock loop of a narrow capture range but a large loop gain. The output frequency of the variable frequency oscillating means is varied by changing the setting of the frequencies of the first and second frequency signals.
摘要翻译：第一和第二频率信号由频率转换器进行频率转换，频率转换输出和可变频率振荡装置的输出由数字相位比较器进行相位比较。相位比较输出控制可变频率振荡装置，构成宽捕获范围的第一锁相环。来自可变频率振荡装置的输出由第一频率信号进行频率转换，转换后的输出和第二频率信号由模拟相位比较器进行相位比较。通过相位比较的输出被控制为可变频率振荡装置，构成窄捕获范围但是较大的环路增益的第二锁相环。通过改变第一和第二频率信号的频率的设置来改变可变频率振荡装置的输出频率。

5. 发明授权

US4349789A Stabilized sweep frequency generator with adjustable start and stop frequencies 失效
标题翻译：具有可调启动和停止频率的稳定扫频发生器
公开(公告)号：US4349789A
公开(公告)日：1982-09-14
申请号：US192814
申请日：1980-10-01
申请人： Takenori Kurihara
发明人： Takenori Kurihara
IPC分类号： H03K4/08 , H03B23/00 , H03L7/12
CPC分类号： H03B23/00 , H03B2200/0092
摘要： The oscillation frequency of a variable frequency oscillator is swept by a sweep signal from a sweep signal generator and the oscillation frequency is compared with a preset sweep start frequency for detecting coincidence therebetween. Upon detecting the coincidence, the sweep operation of the sweep signal generator is stopped and, at the same time, the oscillation frequency of the variable frequency oscillator is made by phase lock loop means to be phase-synchronized with a reference frequency. When the phase synchronization is established, an error signal in the phase synchronization is held and the loop of the phase lock loop means is cut off and then the error signal is applied to the sweep signal generator to re-start the frequency sweep of the variable freqency oscillator. When coincidence is detected between the oscillation frequency of the variable frequency oscillator and a preset sweep stop frequency, the sweep operation is stopped.
摘要翻译：可变频率振荡器的振荡频率由扫描信号发生器的扫描信号扫描，并将振荡频率与预设的扫描起始频率进行比较，以检测它们之间的一致。在检测到一致时，扫描信号发生器的扫描动作停止，同时，通过锁相环装置使可变频振荡器的振荡频率与基准频率相位同步。当建立相位同步时，保持相位同步中的误差信号，并且锁相环装置的环路被切断，然后将误差信号施加到扫描信号发生器以重新启动变量的频率扫描频率振荡器当在可变频率振荡器的振荡频率和预设的扫频停止频率之间检测到一致时，扫描操作停止。

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